Datasheet

 
       
SLLS534B − MAY 2002 − REVISED OCTOBER 2004
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
D Operates With 3-V to 5.5-V V
CC
Supply
D Operates Up To 1 Mbit/s
D Low Standby Current...1 µA Typ
D External Capacitors ...4 × 0.1 µF
D Accepts 5-V Logic Input With 3.3-V Supply
D RS-232 Bus-Pin ESD Protection Exceeds
±15 kV Using Human-Body Model (HBM)
D Applications
− Battery-Powered Systems, PDAs,
Notebooks, Laptops, Palmtop PCs, and
Hand-Held Equipment
description/ordering information
The SN65C3222 and SN75C3222 consist of two line drivers, two line receivers, and a dual charge-pump circuit
with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). The devices provide the
electrical interface between an asynchronous communication controller and the serial-port connector. The
charge pump and four small external capacitors allow operation from a single 3-V to 5.5-V supply. The devices
operate at data signaling rates up to 1 Mbit/s and a driver output slew rate of 24 V/µs to 150 V/µs.
The SN65C3222 and SN75C3222 can be placed in the power-down mode by setting PWRDOWN
low, which
draws only 1 µA from the power supply. When the devices are powered down, the receivers remain active while
the drivers are placed in the high-impedance state. Also, during power down, the onboard charge pump is
disabled, V+ is lowered to V
CC
, and V− is raised toward GND. Receiver outputs also can be placed in the
high-impedance state by setting EN
high.
ORDERING INFORMATION
T
A
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOIC (DW)
Tube of 25 SN75C3222DW
75C3222
SOIC (DW)
Reel of 2000 SN75C3222DWR
75C3222
−0°C to 70°C
SSOP (DB) Reel of 2000 SN75C3222DBR CA3222
−0 C to 70 C
TSSOP (PW)
Tube of 70 SN75C3222PW
CA3222
TSSOP (PW)
Reel of 2000 SN75C3222PWR
CA3222
SOIC (DW)
Tube of 25 SN65C3222DW
65C3222
SOIC (DW)
Reel of 2000 SN65C3222DWR
65C3222
−40°C to 85°C
SSOP (DB) Reel of 2000 SN65C3222DBR CB3222
−40 C to 85 C
TSSOP (PW)
Tube of 70 SN65C3222PW
CB3222
TSSOP (PW)
Reel of 2000 SN65C3222PWR
CB3222
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright 2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
DB, DW, OR PW PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
EN
C1+
V+
C1−
C2+
C2−
V−
DOUT2
RIN2
ROUT2
PWRDOWN
V
CC
GND
DOUT1
RIN1
ROUT1
NC
DIN1
DIN2
NC
NC − No internal connection
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